According to a post over at Donanimhaber.com, it appears that Nvidia wants its GTX 560, 550 series out of the market as soon as the GTX 660 and 650 series shows up.
According to the report, partners should have already gotten their "last day order" notice and after these have been fulfilled, the GTX 560, 550 series graphics cards will get their end-of-life (EOL) tag. Nvidia simply wants to get rid of the stock before it starts to fill the market with new graphics cards.
According to our info, Nvidia still did not discuss any names for the upcoming graphics cards, but it is now widely believed that we will see a GK104 equipped GTX 660 Ti first. According to rumours, the GTX 660 Ti launch date is set for August 16th. The rest should be based on the GK106 GPU, but the exact naming scheme is still not clear, as these could end up in both 660 and 650 graphics card series.
The good part of the story is that we will probably see a decent price drop on the entire GTX 560, 550 series range as retail/e-tail shops try to clear its inventory and get ready for the new graphics cards.